Trapped excited electrons in Ni2+-doped perovskite KZnF3 nanocrystals in KF–ZnF2–SiO2 glass ceramics

Dashuang Ding; Dashuang Ding; Yanlong Wang; Changgui Lin; Changgui Lin; Shaoqian Zhang; Shaoqian Zhang; Liping Duo

doi:10.1364/OL.402229

Optics Letters
Vol. 45,
Issue 18,
pp. 4984-4987
(2020)
•https://doi.org/10.1364/OL.402229

Trapped excited electrons in Ni²⁺-doped perovskite KZnF₃ nanocrystals in KF–ZnF₂–SiO₂ glass ceramics

Dashuang Ding, Yanlong Wang, Changgui Lin, Shaoqian Zhang, and Liping Duo

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Dashuang Ding, Yanlong Wang, Changgui Lin, Shaoqian Zhang, and Liping Duo, "Trapped excited electrons in Ni²⁺-doped perovskite KZnF₃ nanocrystals in KF–ZnF₂–SiO₂ glass ceramics," Opt. Lett. 45, 4984-4987 (2020)

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Abstract

The photonic properties of glass ceramics (GCs) are often enabled by encapsulating nanocrystals (NCs) and doped transition metal ions (TMIs). However, it is difficult to probe the optics-related effect between the host NCs’ band structure and doped TMIs’ $d {\text -} d$ orbitals. Herein, perovskite-type ${\rm{KZn}}{{\rm{F}}_3}{:}{\rm{Ni\,NCs}}$ in ${\rm{KF}} {-} {\rm{Zn}}{{\rm{F}}_2} {-} {\rm{Si}}{{\rm{O}}_2}$ GCs were prepared and taken as a model system. The excited-state dynamics of host NCs and Ni ions’ $d {\text -} d$ orbitals were studied by transient absorption spectroscopy. It presents a strong interaction between Ni’s $d$ orbitals and the band edge, which could extract excitonic energy in photonic applications. These findings facilitate understanding and design of TMIs-doped GCs in real-life photonic applications.

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Corrections

Dashuang Ding, Yanlong Wang, Changgui Lin, Shaoqian Zhang, and Liping Duo, "Trapped excited electrons in Ni²⁺-doped perovskite KZnF₃ nanocrystals in KF–ZnF₂–SiO₂ glass ceramics: publisher’s note," Opt. Lett. 45, 5376-5376 (2020)
https://opg.optica.org/ol/abstract.cfm?uri=ol-45-19-5376

15 September 2020: A typographical correction was made to the author email listing.

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$τ_{1}$ , $1.57 \pm 0.2 p s$	$A_{1}$ , $- 9.1 E - 4$
$τ_{2}$ , $107.7 \pm 8.4 p s$	$A_{2}$ , $- 8.6 E - 4$
$τ_{3}$ , $1736 \pm 115 p s$	$A_{3}$ , $- 0.0013$
$τ_{a v e} = 776 \pm 51 p s$

NCs	Ion	Band Position (nm)	ETT (ps)	$ε_{E T}$	Refs.
$C s P b C l_{3}$	$M n^{2 +}$	387	$140$	$\sim 0.5$	[37,38]
$C s P b C l_{3}$	$F e^{3 +}$	402	$\sim 135$	0.53	[39]
$C s P b C l_{3}$	$Y b^{3 +}$	406	$\sim 1$	0.4–0.9	[40]
$C s P b B r_{3}$	$N i^{2 +}$	518	$< 66$	$\sim 0.98$	[20]
$K Z n F_{3}$	$N i^{2 +}$	411	—	$\sim 1$	This work

$τ_{1}$ , $1.57 \pm 0.2 p s$	$A_{1}$ , $- 9.1 E - 4$
$τ_{2}$ , $107.7 \pm 8.4 p s$	$A_{2}$ , $- 8.6 E - 4$
$τ_{3}$ , $1736 \pm 115 p s$	$A_{3}$ , $- 0.0013$
$τ_{a v e} = 776 \pm 51 p s$

NCs	Ion	Band Position (nm)	ETT (ps)	$ε_{E T}$	Refs.
$C s P b C l_{3}$	$M n^{2 +}$	387	$140$	$\sim 0.5$	[37,38]
$C s P b C l_{3}$	$F e^{3 +}$	402	$\sim 135$	0.53	[39]
$C s P b C l_{3}$	$Y b^{3 +}$	406	$\sim 1$	0.4–0.9	[40]
$C s P b B r_{3}$	$N i^{2 +}$	518	$< 66$	$\sim 0.98$	[20]
$K Z n F_{3}$	$N i^{2 +}$	411	—	$\sim 1$	This work

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Equations (1)

Optics Letters